I am a woman aspiring to be car-lite. I own a motorcycle and a bike(unfortunately using the motorcycle more right now due to my work/school schedule, but that changes soon), but I use my boyfriend's car sometimes. He's the one afraid of riding in traffic
I do think that more men tend towards this type of forum for hobbies, and some women get nervous due to the risks involved in the inevitable reality of bicycling in the dark and riding public transport at night. Most of those are exaggerated, or trivial compared to the risks of driving a car and a sedentary lifestyle - being smart, fit, and confident are the best things you can do to mitigate your risks.
All IMHO, of course.